A retrospective analysis of the first 200 recipients Of renal transplants at the Johannesburg Hospital showed that 23 (11.5%) were chronic carriers of the hepatitis B virus (HBV) and a further 10 (5%) had previously been exposed to the virus as evidenced by detectable concentrations of antibody to the hepatitis B surface antigen in their serum.

Continuous-flow blood fraction separators facilitate the efficient exchange of large volumes of plasma or red cells and therefore have clinical application in the rapid correction of abnormalities located predominantly in either of these compartments.

A benzodiazepine withdrawal syndrome was demonstrated in this study. It occurred more frequently with use of the short-acting type of benzodiazepine and approximately 26 hours after discontinuing the regular intake of the drug as compared with approximately 4 days after stopping the regular intake of the Iong-acting type of benzodiazepine.

Specific metabolic properties of hypoxic (and therefore radio-resistant) tumour cells are responsible for the selective effect of radiosensitizers (such as misonidazole) and hyperthermia upon these cells in respect of radiosensitization as well as cytotoxicity.